Some Question of Geological Survey of a Tunnel in a Southwest-China railway

A railway tunnel in southwest china is 8.5Km .It has a complex geological condition.According to remote sensing and survey and reconnoitre in the various phase,the geological condition of the tunnel is been examined.The faultage of the tunnel and the stress of the earth and the water under the earth is been found out.So the foundation is been offered for the design and construction of the tunnel.